Improvement in grain-sepaeatoe



wuLLS e CHLCHESTER@ Grain Separator.

Patented Sept.v 22' @einen ,gisten @anni ffies.

CLARK W. MILLS AND LEWIS S. CHICHESTER, OF BROOKLYN, NEW YORK, ASSIGNORS TO THEMSELVES AND GEORGE H. NICHOLS, 0F SAME PLACE.

Letters Patent No. 82,431, dated September 22, 1868; antedated September 14, 1868.

IMPROVEMENT IN GRAIN-SEPARATOR.

@the Srlgehut referrer tu in these ttttns ntent rmt marking mit nf tlge same.

TO ALL WHOM IT MAY CONCERN:

Bc it known that we, CLARK W. MILLS and LEWIS S. Cnronusrnn, of Brooklyn, in the county of Kings, and State of New York, ha'veinvented, made, and applied to use, a. certain new and useful Improvement in Cleaning and Separating Grain; and we do hereby declare the following to be a full, clear, and exact description of the said invention, reference being had to the annexed` drawing, making part of this specification,

wherein- Figure 1 is a vertical section ofthe said cleaner and separator.

Figure 2 is a plan of the same.

Similar marks of reference denote the same parts.

The object of our invention is to remove the dust, foreign substances, and light grains from wheat or other grains, and also, if desired, to separate such grains into two'or more qualities, thus removig the diilculty heretofore experienced in determining the value of grain when mixed with foreign substances, and when two or more qualities of grain are together.v v 5 Our device consists in nn adjustable curb, that can be moved nearerto or farther from the point from which the grain falls, to direct the force of a. suction-blast upon the grain, when it has aoquiredmore or less accelerated velocity, and we vcombine therewith an adjustable blast-regulator, by means of which the blastopening is lessened or increased, and consequently the speed of the blast and its action on the grain are con trolled, so as to remove therefrom the foreign matter and light grains, or separate different qualities of grains from each other by the action of the air. v

In the drawing, a represents the iloor or support for thegapparatus; b the outer curb, and e the inner curb, between which are openings, d d, for the grain to pass away. c e are standards sustaining the hopperf, and suspending the deileeting-cone g, around the edges of which iis a ring,rL, also sustained by the standards e. is an adjustable flaring curb. Setting within the curb e and 7c is a blast-regulating disk, that can be raised or lowered on the screw Z. V

The amount of grain delivered can be regulated by raising or lowering the hopperf, and the grain is spread, by the cone pr/I, into a thin sheet, and caused to fall vertically by the ring It, and the amount of grain drawn in through the space between the curb and disk 7c can be regulated by the volume ofthe blast exhausted through the curb z', in proportion to the space between and 7c, and the-consequentspeed of the air; and the vertical 'adjustment of the curb z' and its disk le allows the air to act upon the grain after having acquired the desired accelerated velocity in falling, so that this cleaner and separator can be made to separate diil'erent qualities ot' grain, or take out the foreign matters, and seeds, and imperfect grain, as desired, andthe apparatus is very cheaply made, compact. easily kept in order, or adjusted Vto dilerent characters of grain.

What we claim, and desire to secure by Letters Patent, is-

'l'he adjustable curb z', that can be moved towards or away from the point of delivery of the grain, in combination with the adjustable blust-regulatork, applied substantially as and for the purposes set forth.

In witness whereof, we have hereunto set our signatures, this eleventh day of February, A, D. 1868..

C. W. MILLS, LEWIS S. CHICHESTER.

Witnesses:

Clins. II. SMITH, Guo. D. WALKER. 

